I think the local broadcaster already has all the rights, after all even FAN CODE bought their home game for the Indian market.
It's just that the Bangladeshi broadcaster (Main provider of feed) keeps failing to strike a deal with Australian broadcasters like FOXTEL or SEVEN Network and even for the English market (SKY, etc). This could happen due to incompetency, foreign broadcasters don't want to pay much, or maybe Bangladeshi providers are asking for too much money.
Yeah, I agree with you. There must be something wrong with the main provider of feed. Or this issue would not have persisted in the men’s side of cricket at the very least. A few years back when Australia and New Zealand came to Bangladesh, they had not been able to sign a deal with Australian media or New Zealand’s media channels.
The possible reasons for this could be many, but they need to solve it as soon as possible. Because this might hold the Bangladesh team back in the future from getting to play with teams like Australia and New Zealand in the future. Playing this bilateral series are too important for a growing team like Bangladesh.
Not aware if it happened with New Zealand too but yeah, in recent tours it happened with Australia and England.
Now i think of it, the latter 2 cricket boards (CA, ECB) hardly host Bangladesh and rarely travel there for bilateral. When 2 teams rarely play/ not traveling each other regularly then it's hard for broadcasters to sign a long-term deal because Usually, broadcasters buy a full package (Home series Men + Women) and negotiations can go south for one-off series because both parties want to squeeze each other for an extra penny.